Attributes to open a text box if the check box is checked

I would like an attribute for Etching custom text on an item. I set one attribute with a checkbox, that if checked, adds $6 to the item. But I can't figure out how to open a text box if they select the checkbox so they can add the text they want etched.

That's going to be 'complicated'. Essentially, you want the product to have (along with any other attributes) a checkbox attribute and a TEXT attribute that's hidden unless the checkbox attribute is ticked.

Doable with customer jQuery that checks to see if the checkbox attribute is present and hides/shows the associated TEXT attribute based on the 'checked' status of that checkbox.